During a telematch, each group of students was supposed to collect as many coloured marbles as possible. Each colour represented a certain point as tabulated:

Colours	Points
Red	2
White	5
Silver	7

In each container, the number of red marbles was 60% more than the number of silver marbles and 30% less than the number of white marbles. Given that the total possible points if the group managed to collect all the marbles were 3028 points, how many marbles were not red in colour?

Red	White	Silver
8x7		5x7
7x8	10x8
56 u	80 u	35 u

	Red	White	Silver	Total
Number	56 u	80 u	35u
Value	2	5	7
Total value	112 u	400 u	245 u	757 u

100% + 60% = 160%
160% = ¹⁶⁰₁₀₀ =⁸₅

100% - 30% = 70%
70% = ⁷⁰₁₀₀ = ⁷₁₀

Total number of points collected
= 112 u + 400 u + 245 u
= 757 u

757 u = 3028

1 u = 3028 ÷ 757 = 4

Number of marbles not white in colour
= 56 u + 35 u
= 91 u
= 91 x 4
= 364

Answer: 364